DataTalk can transfer data that it can read/collect from supported communication protocols into the Microsoft Azure IoT Hub platform in a single/same format from multiple sources.

How to Retrieve a Device Connection String in Azure IoT Hub

1. Sign in to the Azure Portal
   Go to the Azure Portal and sign in with your account credentials.
2. Open your IoT Hub
   From the left-hand menu, select Resource groups or use the search bar to locate and open your IoT Hub resource.
3. Access the Devices section
   In the IoT Hub navigation menu, select IoT devices.
4. Select the target device
   Click on the name of the device for which you want to retrieve the connection string.
5. Copy the connection string
   In the device details pane, locate the Primary connection string or the Secondary connection string. Click the copy icon to copy the required value for use in your application or configuration.

• Paste the string into DataTalk – device connection string

More detailed manual how to get connection string: here